doubling up on mcbs

[twodds]

hi fellow sparks
Ive been told whilst working for my present firm that we can double up on breakers if we are fitting a fused spur to the meters we have been installing,the meters only run 0.6 amps
and we usally put them on a 3 amp fuse and on a 6amp mcb.since being told the regs are changing this year so we can double up i cant see that its right to do this and plus its not on paper yet to the rest of us to do.please can any senior spark shed light on this because im not prepaired to do this unless its ok to do so
cheers Twodds

 

[i=p/u]

think you can.. not 100% tho, we need a spark

 

[jaresquire]

For a ring final a spur can be wired at the origin ie the CU so yes it is permitted. However, not a method I use myself.

 

[i=p/u]

but with it only using low amp, wouldnt it be ok in radial too.. i dont know for defs..

 

[jaresquire]

Yes, same for radial

 

[i=p/u]

obv not over loading

 

[jaresquire]

The usual rules for unfused spurs apply, which some people have been reciting a lot on this forum lately

 

[SimpleSimon]

Seen it done a few times, if overloaded the breaker would operate because remember it would be the sum of the total current from both the spur and the ring flowing through the breaker. Personally I would only leave it as one socket/ lighting point from that spur and label appropriately. It just looks messy in the CU.